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THz transient generated in a -thick GaSe crystal and detected with a GaSe detector of thickness. The dotted line represents a Gaussian fit to the field envelope which corresponds to a pulse duration of (FWHM of the intensity envelope).
Ultrabroadband amplitude and phase spectra of the THz transient from a GaSe emitter of thickness as observed with a -thick GaSe electro-optic sensor . The dashed lines are the corresponding spectra as detected with a -thick ZnTe crystal.
Normalized amplitude spectra detected with a -thick GaSe crystal at various phase matching angles , 45°, 50°, and 60°. The THz pulse is generated in a -thick GaSe emitter at a phase matching angle of . The dotted line represents the calculated emission spectrum (Refs. 12 and 16).
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